# ex2
cnt = 0 
for i in range(1,5):
    for j in range(1,5):
        for k in range(1,5):
          if  i!= j and i!= k and j!=k:
              print ( i*100+j*10+k ) 
              cnt=cnt+1              
print(cnt)
#时间复杂度:O（4*4*4）